Cos(3x)

Definition

cos(3x) is a trigonometric function representing cosine with an argument 3x. It takes an angle measured in radians (represented by 3x) and returns its corresponding y-coordinate on the unit circle.

Related terms

Trigonometric functions:

Mathematical functions that relate angles to ratios of sides in a right triangle.

Argument: The value(s) inside a function that determine its behavior or result.

Unit circle: A circle with a radius of 1 unit used to understand trigonometric functions and their values.